使用ember-data通过id查找一些记录

时间:2013-04-09 04:10:48

标签: ember.js ember-data travis-ci

我正在尝试为Travis-CI Mobile加载一些最喜欢的存储库我试图整理here

我拥有的是一系列存储库ID,如下所示:

var favoriteRepos = ["668498","557554","7934","207993"];

我们怎么能用ember-data revision 12,the Travis custom RESTAdapterTravis API加载所有这些回购?

到目前为止,这是我尝试失败的原因:

// This is in the repo model - https://github.com/floydpink/Travis-CI-www/blob/master/js/app/models/Repo.js
Repo.reopenClass({
  favorites     : function (favorites) {
    // favorites would be an array of repo-ids like  ["451069","538603"]
    var faves = Ember.ArrayProxy.create({
      isLoadedBinding : 'content.isLoaded',
      content         : Ember.A([])
    });
    favorites.forEach(function (favorite) {
      faves.pushObject(Repo.find(favorite));
    });
    return faves;
  }
});

// And in FavoritesController
this.set('content', Repo.favorites(favoriteRepos));

所以通用的问题是,我们如何使用ember-data来加载id的几个不同的记录呢?

2 个答案:

答案 0 :(得分:4)

你应该能够做到:

Repo.reopenClass({
  favorites     : function (favorites) {
    // favorites would be an array of repo-ids like  ["451069","538603"]
    return Ember.ArrayProxy.createWithMixins({
      content: favorites.map(function(id) { return Repo.find(id); }),
      isLoaded: function() {
        return this.everyProperty('isLoaded');
      }.property('@each.isLoaded');
    });
  }
});

答案 1 :(得分:1)

如果您的把手模板如下所示:

{{#if isLoaded}}
  {{#each controller}}
    ...
  {{/each}}
{{/if}}

然后它将无效,因为您从未在阵列上将isLoaded设置为true。根据您使用的数据实现,您可以执行以下操作:

Repo.reopenClass({
  favorites: function (ids) {
    // ids would be an array of repo-ids like  ["451069","538603"]
    var loadCount = 0;
    var favorites = Em.A();
    ids.forEach(function(id) {
      var favorite = Repo.find(id);
      favorites.pushObject(favorite);
      favorites.then(function() {
        loadCount++;
        if (loadCount == ids.length) {
          favorites.set('isLoaded', true);
        }
      });
    });
    return favorites;
  }
});

从服务器加载所有收藏夹后,isLoaded属性设置为true。